Kickstarter - FilterWatch is cool but what can you think of?

When you get right down to it, FilterWatch is a product based on an air speed sensor. Almost all of our engineering effort has been directed at creating a low cost, low power air speed sensor. This entailed a lot of trial and error, routing considerations, and filtering. When we got where we needed, it was all about creating a long term monitor to watch the change in air speed through and HVAC filter as it got more and more clogged over time. Not as easy as it sounds considering we don't know when the HVAC system is ON. We determine that using air speed! 

So basically, the 'sensor' has all the information we need to create FilterWatch.

So with our new backers lowing down, we didn't want to leave any stone unturned. We decided to offer a sensor only reward for DIYers.

There are a lot of other ideas out there regarding how air speed changes can be used to determine possible maintenance issues around your home.

One of our backers would like  to monitor his dryer exhaust vent. This is a great idea that can be similar to FilterWatch or maybe it can be 'initiated'. In my case the best place to monitor my dryer vent is in the attic. This way, I catch clogging of the pipe all the way to the point that the air blows into the attic. I ran a quick test of drying times for a typical (albeit large) load. There is a significant difference when I vent the air right out the back (and into the laundry room) versus hooking the flexible hose to the pipe in the wall that goes up and into the attic. Something like a full 20 minutes extra drying time....whoa. This is killing me. My next house will have a short vent go right out the side of the house. 

What ideas do you have?